"GoogleSignIn/GoogleSignIn.h" file not found

Issue

I am using Ionic with the google Plus cordova plugin: https://ionicframework.com/docs/v3/native/google-plus/

I set up everything correctly and it works without any problems on Android. On iOS I used the command "Ionic cordova prepare iOS", at first I got problems with some Cocoapods ("cannot run cocoapods as root"), I fixed that Error with the help of this post: Can't run sudo pod install after updating to cocoapods 0.32.1 with error "You cannot run CocoaPods as root. (CLAide::Help)". After that I was able to get a .xcodeproj.

After some research I found out I have to open the .xcworkspace. I clicked on run and got the Error: "GoogleSignIn/GoogleSignIn.h" file not found

Solution

I used an old mac, that was the problem

Answered By - Yessir